/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.program;

import static org.hisp.dhis.system.deletion.DeletionVeto.ACCEPT;

import java.util.List;
import lombok.RequiredArgsConstructor;
import org.hisp.dhis.program.notification.ProgramNotificationInstance;
import org.hisp.dhis.program.notification.ProgramNotificationInstanceParam;
import org.hisp.dhis.program.notification.ProgramNotificationInstanceService;
import org.hisp.dhis.system.deletion.DeletionVeto;
import org.hisp.dhis.system.deletion.IdObjectDeletionHandler;
import org.springframework.stereotype.Component;

/**
 * @author Zubair Asghar
 */
@Component
@RequiredArgsConstructor
public class ProgramNotificationInstanceDeletionHandler
    extends IdObjectDeletionHandler<ProgramNotificationInstance> {
  private final ProgramNotificationInstanceService programNotificationInstanceService;

  @Override
  protected void registerHandler() {
    whenVetoing(Enrollment.class, this::allowDeleteEnrollment);
    whenVetoing(TrackerEvent.class, this::allowDeleteTrackerEvent);
    whenVetoing(SingleEvent.class, this::allowDeleteSingleEvent);
  }

  private DeletionVeto allowDeleteEnrollment(Enrollment enrollment) {
    List<ProgramNotificationInstance> instances =
        programNotificationInstanceService.getProgramNotificationInstances(
            ProgramNotificationInstanceParam.builder().enrollment(enrollment).build());

    return instances == null || instances.isEmpty() ? ACCEPT : VETO;
  }

  private DeletionVeto allowDeleteTrackerEvent(TrackerEvent event) {
    List<ProgramNotificationInstance> instances =
        programNotificationInstanceService.getProgramNotificationInstances(
            ProgramNotificationInstanceParam.builder().trackerEvent(event).build());

    return instances == null || instances.isEmpty() ? ACCEPT : VETO;
  }

  private DeletionVeto allowDeleteSingleEvent(SingleEvent event) {
    List<ProgramNotificationInstance> instances =
        programNotificationInstanceService.getProgramNotificationInstances(
            ProgramNotificationInstanceParam.builder().singleEvent(event).build());

    return instances == null || instances.isEmpty() ? ACCEPT : VETO;
  }
}
